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Wishball challenge: tens

Wishball challenge: tens

TLF ID L8459

Challenge your understanding of place value in whole numbers up to 99. Receive a starting number, such as 86, and work towards turning it into a target number, such as 18, within 20 turns. Spin a random digit, choose its decimal place value and use the given operation (either addition or subtraction) on your starting number. Be careful not to undershoot the target number! Use the ‘Wishball’ to select your final digit. Try to achieve the target in as few turns as possible. This learning object is one of a series of 15 objects.

Tags: 2-digit numbers addition and subtraction Whole numbers
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Educational details

Educational value
  • Develops students’ understanding of place value.
  • Stimulates students’ mental calculation strategies.
  • Uses three different methods of representing numbers to assist students’ visualisation of place value.
  • Scaffolds students’ attempts with immediate feedback.
  • Encourages repeated use through randomisation of activity elements.
  • Includes an option to print a record of the place-value decisions made for every turn in each game.
  • Includes voiceover support for key instructions.
Year level

1; 2

Topics Addition Accuracy and precision Positive integers Number lines Subtraction Place value Mental arithmetic Associativity Mathematical expressions Numerical order Number words Grouping (Counting)
Learning area
  • Mathematics

Other details

Contributors
  • Contributor
  • Name: Acumentum Pty Ltd
  • Organization: Acumentum Pty Ltd
  • Description: Technical implementer
  • Address: VIC, AUSTRALIA
  • URL: http://www.acumentum.com.au
  • Name: Education Services Australia Ltd
  • Organization: Education Services Australia Ltd
  • Description: Technical implementer
  • Address: VIC, AUSTRALIA
  • URL: http://www.esa.edu.au/
  • Name: Education Services Australia
  • Organization: Education Services Australia
  • Description: Data manager
  • Person: Michael Wagner
  • Description: Script writer
  • Person: John Flatt
  • Description: Subject matter expert
  • Person: Howard Reeves
  • Description: Subject matter expert
  • Publisher
  • Name: Education Services Australia Ltd
  • Organization: Education Services Australia Ltd
  • Description: Publisher
  • Address: VIC, AUSTRALIA
  • URL: http://www.esa.edu.au/
  • Resource metadata contributed by
  • Name: Education Services Australia Ltd
  • Organisation: Education Services Australia Ltd
  • Address: AUSTRALIA
  • URL: www.esa.edu.au
Access profile
  • Colour independence
  • Device independence
  • Hearing independence
Learning Resource Type
  • Interactive
Rights
  • © Education Services Australia Ltd, 2016, except where indicated under Acknowledgements. Unless otherwise indicated, this material may be used in accordance with the Creative Commons Attribution 4.0 International (CC BY 4.0) licence creativecommons.org/licenses/by/4.0/.